Rotin is an ancient Jewish name contained in Medieval documents from the Kingdom of Murcia. Most of these names, if not all, appear to be original Sephardic names not changed by conversion.(www.sephardic.com)
This next came about after I googled "Jewish Roten"
Roten Family Crest and Name HistoryOrigin Displayed: JewishRoten is a habitation name, from the broad category of hereditary surnames, which are derived from place names. In this case, the surname Roten is derived from any of a number of places so called in Germany. The name Roten derives from the Yiddish royt, which means red, and the German word berg,which means hill. This was an ornamental surname for someone who lived near the red hill.